A particular favourite of mine is . After entering details of a book, it will then search across LOTS of bookselling websites and bring you a broad overview of the deals currently out there. It will even include the shipping / postage prices to your location. Here’s some of what it brought back for Kipling’s “The Jungle Book” :

On Monday, booksellers began reporting that access to the Bookseller website from stores had been blocked by Waterstone's IT department on the orders of management. Several claimed that managing director Gerry Johnson had posted on the book chain's intranet to the effect that The Bookseller's website was unnecessary for the company's daily business activities, that the content could be "misleading", and that access to it had therefore been removed.